i like the concept for this challenge. the shallow dof works well. the poor lighting takes away from the image, however, and doesn't provide much impact.
compositionally, i think many users probably thought it was boring. there's not much going on, and it didn't seem to take a lot of creativity or thought in it's setup. while i can see what you're going for, in the end it's just a couple of toys on a smudgy tabletop. :(